[Zope] improving Security ZMI dialog

[Milos Prudek]

When Anonymous has a certain permission, all other roles have it as well.

When Authenticated  has a certain permission, all other roles except 
Anonymous have it as well.

I think that permissions should not be "selectable" for those roles. 
Instead there would be an image icon meaning "selected and locked".
Like this:

                     Anonymous        Authenticated     Editor  Manager
Permission 1        [ ]              [ ]               [ ]     [x]
Permission 2        [ ]              [x]                *       *
Permission 3        [x]               *                 *       *

...where:
[ ] = not selected
[x] = selected
[*] = selected and locked

-- 
Milos Prudek